Flight will fly from human poo- One man can make 250 liters of fuel

Chemists at a lab in Gloucestershire have turned the waste into kerosene

James Hazits, CEO of England's Green Firefly, who has been developing low-carbon fuels in Gloucestershire for 20 years

Firefly's team worked with Cranfield University to examine the fuel's life cycle carbon impact.

It concluded that Firefly's fuel has a 90% lower carbon footprint than standard jet fuel.

it "has no fossil carbon, it's a fossil-free fuel

So finding new, greener ways to make kerosene without using fossil fuels has become a global gold rush

Electric planes are being developed, with a company in the Cotswolds promising hydrogen-electric powered flights for a dozen passengers by 2026.